THEORETICAL RESEARCH RESPONSE TIME OF THE MECHANISM FOR COMPRESSION RATIO CHANGING OF THE CONROD-FREE ENGINE
Journal: Scientific Journal of Silesian University of Technology. Series Transport (Vol.104, No. 10)Publication Date: 2019-09-01
Authors : Tatiana KOLESNIKOVA Nikolay MISCHENKO Olha SAKNO Volodymyr SUPRUN Galyna A. FILIPOVA Igor NIKITCHENKO Andrii GORPYNIUK Mykola NAZARENKO;
Page : 69-83
Keywords : mechanism for compression ratio changing; connecting rod and crank mechanism; conrod-free engine; response time; pressure; oil temperature;
Abstract
The mathematical model for calculating the response time of the compression ratio of the mechanism for compression ratio changing (MCRC) is presented in this article. This revealed the influence of various engine factors with the connecting rod and crank mechanism (CRCM) on the operation of the MCRC (for example, the rate of the compression ratio change). The results of the study of the operation of the MCRC indicate a strong influence of the values (relative area of flow passage of channels) and р (pressure) on the response time τ in the field of their small values. This indicates that with insignificant changes of the area of flow passage of channel of the hydraulic lock and the minute oil pressure in the cavities, a significant response rate of the MCRC is ensured. The results demonstrate the possibility of speedy compression ratio change in the engine with the MCRC. Calculation studies showed that the mechanism full operation occurs quickly (0.02 s per unit εx), which indicates the expediency of using such a highpressure pump in a four-stroke gasoline engine with CRCM. The mechanism movable body complete movement (S = 4 mm) at the oil temperature in the hydraulic system of 45°C and pressure on the body of p = 60 bar are stated to occur for 0.2 s.
Other Latest Articles
- Large-Signal Analysis of a 1V Common-Gate with Common-Source Active Balun Circuit
- Analysis of the Relevance Effects of Service Industry FDI and Industrial Structure Upgrading in Jiangsu Province
- Study of the Use Bagasse Ash as a Filler Replacement to Characteristics Asphalt Concrete
- Effect of Collision Variation towards the Index Retained Strength of Mixed Asphalt Concrete Wearing Course
- Effect of Cutting Parameter on Surface Roughness in Laser-Assisted Turning of 9CrSi Hardened Steel
Last modified: 2020-03-17 22:19:39